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参数资料
型号： MPC8349EVVALFA
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： 32-BIT, 667 MHz, MICROPROCESSOR, PBGA672
封装： 35 X 35 MM, 1.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, TBGA-672
文件页数： 72/112页
文件大小： 1295K
代理商： MPC8349EVVALFA
MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 2
62
Freescale Semiconductor
I2C
12 I2C
This section describes the DC and AC electrical characteristics for the I2C interface of the MPC8349EA.
12.1
I2C DC Electrical Characteristics
Table 41 provides the DC electrical characteristics for the I2C interface of the MPC8349EA.
12.2
I2C AC Electrical Specifications
Table 42 provides the AC timing parameters for the I2C interface of the MPC8349EA. Note that all values
refer to VIH (min) and VIL (max) levels (see Table 41).
Table 41. I2C DC Electrical Characteristics
At recommended operating conditions with OVDD of 3.3 V ± 10%.
Parameter
Symbol
Min
Max
Unit Notes
Input high voltage level
VIH
0.7
× OV
DD
OVDD+ 0.3
V
Input low voltage level
VIL
–0.3
0.3
× OV
DD
V
Low level output voltage
VOL
00.2
× OV
DD
V1
Output fall time from VIH(min) to VIL(max) with a bus capacitance
from 10 to 400 pF
tI2KLKV
20 + 0.1
× C
B
250
ns
2
Pulse width of spikes which must be suppressed by the input filter
tI2KHKL
050
ns
3
Input current each I/O pin (input voltage is between 0.1
× OV
DD
and 0.9
× OV
DD(max)
II
–10
10
μA4
Capacitance for each I/O pin
CI
—10
pF
Notes:
1. Output voltage (open drain or open collector) condition = 3 mA sink current.
2. CB = capacitance of one bus line in pF.
3. Refer to the MPC8349E Integrated Host Processor Reference Manual for information on the digital filter used.
4. I/O pins obstruct the SDA and SCL lines if OVDD is switched off.
Table 42. I2C AC Electrical Specifications
Parameter
Symbol 1
Min
Max
Unit
SCL clock frequency
fI2C
0
400
kHz
Low period of the SCL clock
tI2CL
1.3
—
μs
High period of the SCL clock
tI2CH
0.6
—
μs
Setup time for a repeated START condition
tI2SVKH
0.6
—
μs
Hold time (repeated) START condition (after this period, the first clock pulse is
generated)
tI2SXKL
0.6
—
μs
Data setup time
tI2DVKH
100
—
ns
Data hold time:
CBUS compatible masters
I2C bus devices
tI2DXKL
—
0 2
—
0.9 3
μs
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